Answer:
The lines that reflect Polypheus disappointment at being defeated by guile and not by strenght are:
"Not this weak pigmy wretch, of mean design, Who, not by strength subdued me, but by wine."
Even though Polyphemus had been foretold that a man by the name of Odysseus would blind him, he did not fear the heroe because he assumed that someone with enough power to harm him, a great cyclops, would be a godlike giant.
Polyphemus feels cheated by Odysseus' guile, since he feels he was not confronted in a fair battle, but numbed and paralyzed with pure wine.